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Abstract

The Nd3+→Yb3+ energy transfer spectral characteristics in (Nd,Yb):Y2O3 ceramics and the relevant spectral and emission decay data on single-doped (especially temperature effects) and codoped samples are presented. The transfer efficiencies depend strongly on Yb3+ content, attaining ∼98% for Nd1at.%–Yb5at.% at 300K. The resonant Nd3+→Yb3+ energy transfer (F3∕24(Nd),F7∕22(Yb))→(I9∕24(Nd),F5∕22(Yb)), involving Nd3+ in C2 sites and Yb3+ in C2 and C3i sites, is dominated by a dipole–dipole interaction with a microparameter CDA,Nd–Yb≈1×10−38cm6s−1 at 300K. The possibility of using this system for Nd-sensitized Yb3+ laser emission from room-to-cryogenic temperatures is discussed.

References

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